Guard rail support for scaffolding



FIG. 1 is a side elevational view of a guide rail support for scaffolding showing my new design with the opposite side being a mirror image thereof;

FIG. 2 is a side, top, rear perspective view thereof; and,

FIG. 3 is an opposite side, bottom, rear perspective view thereof. 

The ornamental design for a guard rail support for scaffolding, as shown and described. 